package com.xgzit.xgzmall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.xgzit.common.constant.ProductConstant;
import com.xgzit.common.constant.XgzConstant;
import com.xgzit.common.dto.SkuHasStockVo;
import com.xgzit.common.dto.SkuReductionDto;
import com.xgzit.common.dto.SpuBoundDto;
import com.xgzit.common.dto.es.SkuEsModel;
import com.xgzit.common.utils.R;
import com.xgzit.xgzmall.product.entity.*;
import com.xgzit.xgzmall.product.feign.CouponFeignService;
import com.xgzit.xgzmall.product.feign.SearchFeignService;
import com.xgzit.xgzmall.product.feign.WareFeignService;
import com.xgzit.xgzmall.product.service.*;
import com.xgzit.xgzmall.product.vo.*;
import io.seata.spring.annotation.GlobalTransactional;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.xgzit.common.utils.PageUtils;
import com.xgzit.common.utils.Query;

import com.xgzit.xgzmall.product.dao.SpuInfoDao;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;

@Slf4j
@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Autowired
    SpuInfoDescService spuInfoDescService;

    @Autowired
    SpuImagesService spuImagesService;

    @Autowired
    AttrService attrService;

    @Autowired
    ProductAttrValueService attrValueService;

    @Autowired
    SkuInfoService skuInfoService;

    @Autowired
    SkuImagesService skuImagesService;

    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    CouponFeignService couponFeignService;

    @Autowired
    BrandService brandService;

    @Autowired
    CategoryService categoryService;

    @Autowired
    WareFeignService wareFeignService;

    @Autowired
    SearchFeignService searchFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }
    // todo 高级完善
    @SuppressWarnings("AlibabaTransactionMustHaveRollback")
    /** 这里保存适合seata 的At模式，因为没有高并发*/
    @GlobalTransactional
    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {
        // 1、保存 spu 基本信息 pms_spu_info
        SpuInfoEntity infoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo, infoEntity);
        infoEntity.setCreateTime(new Date());
        infoEntity.setUpdateTime(new Date());
        this.saveBaseSpuInfo(infoEntity);
        Long spuId = infoEntity.getId();
        // 2、保存spu的描述图片 pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity descEntity = new SpuInfoDescEntity();
        descEntity.setSpuId(spuId);
            // 用逗号分隔list
        descEntity.setDecript(String.join(",", decript));
        spuInfoDescService.saveSpuInfoDesc(descEntity);
        // 3、保存spu的图片集  pms_spu_images
        List<String> images = vo.getImages();
        spuImagesService.saveImages(spuId, images);
        // 4、保存spu的规格参数 pms_product_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(attr -> {
            ProductAttrValueEntity valueEntity = new ProductAttrValueEntity();
            valueEntity.setAttrId(attr.getAttrId());
            AttrEntity attrEntity = attrService.getById(attr.getAttrId());
            valueEntity.setAttrName(attrEntity.getAttrName());
            valueEntity.setAttrValue(attr.getAttrValues());
            valueEntity.setQuickShow(attr.getShowDesc());
            valueEntity.setSpuId(spuId);
            return valueEntity;
        }).collect(Collectors.toList());
        attrValueService.saveProductAttr(collect);
        // 5、spu 对应的积分信息 xgzmall_sms->sms_spu_bounds
        Bounds bounds = vo.getBounds();
        SpuBoundDto spuBoundDto = new SpuBoundDto();
        BeanUtils.copyProperties(bounds, spuBoundDto);
        spuBoundDto.setSpuId(spuId);
        R r = couponFeignService.saveSpuBounds(spuBoundDto);
        if (r.getCode() != 0) {
            log.error("远程调用保存spu积分信息失败");
        }
        // 6、spu 对应的所有sku信息
        // 6.1 sku 基本信息 pms_sku_info
        List<Skus> skus = vo.getSkus();
        if (Objects.nonNull(skus) && skus.size()>0){
            skus.forEach(item->{
                String defaultImg = "";
                for (Images image : item.getImages()) {
                    if (image.getDefaultImg() == 1){
                        defaultImg = image.getImgUrl();
                    }
                }
                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(item, skuInfoEntity);
                skuInfoEntity.setBrandId(infoEntity.getBrandId());
                skuInfoEntity.setCatalogId(infoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(spuId);
                skuInfoEntity.setSkuDefaultImg(defaultImg);
                skuInfoService.saveSkuInfo(skuInfoEntity);
                Long skuId = skuInfoEntity.getSkuId();
                // 处理图片
                List<SkuImagesEntity> imagesEntities = item.getImages().stream()
                        .map(img -> {
                            SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                            skuImagesEntity.setSkuId(skuId);
                            skuImagesEntity.setImgUrl(img.getImgUrl());
                            skuImagesEntity.setDefaultImg(img.getDefaultImg());
                            return skuImagesEntity;
                        })
                        .filter(entity-> !StringUtils.isEmpty(entity.getImgUrl()))
                        .collect(Collectors.toList());
                // 6.2 sku 图片信息 pms_sku_images
                skuImagesService.saveBatch(imagesEntities);
                // 6.3 sku 销售属性信息 pms_sku_sale_attr_value
                List<Attr> attr = item.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(a -> {
                    SkuSaleAttrValueEntity attrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(a, attrValueEntity);
                    attrValueEntity.setSkuId(skuId);
                    return attrValueEntity;
                }).collect(Collectors.toList());
                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);
                // 6.4 sku 优惠满减信息 xgzmall_sms->sms_sku_ladder\sms_sku_full_reduction\sms_member_price
                SkuReductionDto skuReductionDto = new SkuReductionDto();
                BeanUtils.copyProperties(item, skuReductionDto);
                skuReductionDto.setSkuId(skuId);
                if (skuReductionDto.getFullCount() > 0 || skuReductionDto.getFullPrice().compareTo(new BigDecimal(XgzConstant.ZERO_STRING)) > 0){
                    R r1 = couponFeignService.saveSkuReduction(skuReductionDto);
                    if (r1.getCode() != 0) {
                        log.error("远程调用保存sku满减优惠信息失败");
                    }
                }
            });
        }

    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity infoEntity) {
        this.baseMapper.insert(infoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SpuInfoEntity> queryWrapper = new QueryWrapper<>();
        // SELECT COUNT(*) FROM pms_spu_info WHERE ((id = ? OR spu_name LIKE ?) AND publish_status = ? AND brand_id = ?)
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)){
            queryWrapper.and(w->{
                w.eq("id", key)
                        .or()
                        .like("spu_name", key);
            });
        }
        String status = (String) params.get("status");
        if (!StringUtils.isEmpty(status)){
            queryWrapper.eq("publish_status", status);
        }
        String brandId = (String) params.get("brandId");
        if (!StringUtils.isEmpty(brandId) && !XgzConstant.ZERO_STRING.equalsIgnoreCase(brandId)){
            queryWrapper.eq("brand_id", brandId);
        }
        String catalogId = (String) params.get("catalog_id");
        if (!StringUtils.isEmpty(catalogId) && !XgzConstant.ZERO_STRING.equalsIgnoreCase(catalogId)){
            queryWrapper.eq("catalog_id", catalogId);
        }

        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                queryWrapper
        );
        return new PageUtils(page);
    }

    @Override
    public void up(Long spuId) {
        // 1、查出当前spuid 对应的sku信息， 品牌的名字
        List<SkuInfoEntity> skus = skuInfoService.getSkusBySpuId(spuId);
        List<Long> skuIdList = skus.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());
        // todo 查询当前 sku 的所有 可以用来被检索的 规格属性
        List<ProductAttrValueEntity> baseAttrs = attrValueService.baseAttrListForSpu(spuId);
        List<Long> attrIds = baseAttrs.stream().map(ProductAttrValueEntity::getAttrId).collect(Collectors.toList());
        List<Long> searchAttrIds =  attrService.selectSearchAttrIds(attrIds);
        // 将list转换为set
        Set<Long> idSet = new HashSet<>(searchAttrIds);
        // 过滤出需要的数据, 并收集
        List<SkuEsModel.Attrs> attrsList = baseAttrs.stream()
                .filter(item -> idSet.contains(item.getAttrId()))
                .map(item -> {
                    SkuEsModel.Attrs attrs1 = new SkuEsModel.Attrs();
                    BeanUtils.copyProperties(item, attrs1);
                    return attrs1;
                })
                .collect(Collectors.toList());
        // todo 远程查询库存，只查询是否有。 R泛型设计  必须考虑失败！
        Map<Long, Boolean> stockMap = null;
        try {
            R r = wareFeignService.getSkuHasStock(skuIdList);
            // 收集成map
            TypeReference<List<SkuHasStockVo>> typeReference = new TypeReference<List<SkuHasStockVo>>() {
            };
            stockMap = r.getData(typeReference).stream().collect(Collectors.toMap(SkuHasStockVo::getSkuId, SkuHasStockVo::getHasStock));
        }catch (Exception e) {
            log.error("调用库存服务查询失败：原因{}", e.getMessage());
        }

        // 2、封装每个sku的信息
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> uoProducts = skus.stream().map(sku -> {
            // 组装需要的数据
            SkuEsModel esModel = new SkuEsModel();
            BeanUtils.copyProperties(sku, esModel);
            esModel.setSkuPrice(sku.getPrice());
            esModel.setSkuImg(sku.getSkuDefaultImg());
            // 远程查询库存，只查询是否有。 如果查询失败，默认有库存！
            if (Objects.isNull(finalStockMap)) {
                esModel.setHasStock(true);
            }else {
                esModel.setHasStock(finalStockMap.get(sku.getSkuId()));
            }
            // 热度评分  默认设为 0
            esModel.setHotScore(0L);
            //  查询 品牌 和 分类的名称
            BrandEntity brand = brandService.getById(esModel.getBrandId());
            esModel.setBrandName(brand.getName());
            esModel.setBrandImg(brand.getLogo());
            CategoryEntity category = categoryService.getById(esModel.getCatalogId());
            esModel.setCatalogName(category.getName());
            // 设置检索属性
            esModel.setAttrs(attrsList);
            return esModel;
        }).collect(Collectors.toList());
        // todo 将数据发送给es进行保存 xgzmall-search
        R r = searchFeignService.productStatusUp(uoProducts);
        if(r.getCode() == 0) {
            // 远程调用成功！
            // todo 修改当前spu状态
            this.baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        }else {
            // 远程调用失败！
            // todo 重复调用问题？ 接口幂等性 重试机制
            /**
             * 1、构造请求数据 将对象转为json
             *      RequestTemplate template = buildTemplateFromArgs.create(argv);
             * 2、发送请求进行执行(执行成功会解码响应数据)
             *      executeAndDecode(template)
             * 3、执行请求会有重试机制，默认是关闭
             *      while(true) {
             *          executeAndDecode(template)
             *      }catch() {
             *          try{
             *              retryer.continueOrPropagate(e);
             *          }catch(){throw ex;}
             *          continue
             *      }
             *
             **/
        }
    }

    @Override
    public SpuInfoEntity setSpuInfoBySkuId(Long skuId) {
        SkuInfoEntity skuInfoEntity = skuInfoService.getById(skuId);
        Long spuId = skuInfoEntity.getSpuId();
        SpuInfoEntity spuInfoEntity = getById(spuId);

        return spuInfoEntity;
    }

}
